Banana Bread Brownies

Banana Bread Brownies

These banana bread brownies with brown butter frosting are sure to take your mind off of being stuck inside and your family will love them too!
Original recipe from
Prep Time 10 minutes
Cook Time 25 minutes
Course Dessert
Calories 200 kcal


  • jelly roll pan


  • 1 ½ c sugar
  • 1 c sour cream
  • ½ c butter (softened)
  • 2 eggs
  • 1 ¾ c (3 or 4) ripe bananas (mashed)
  • 2 tsp vanilla extract
  • 2 c all-purpose flour
  • 1 tsp baking soda
  • ¾ tsp salt
  • ½ c chopped walnuts (optional)

Brown Butter Frosting

  • ½ c butter
  • 4 c powdered sugar
  • 1 ½ tsp vanilla extract
  • 3 tbsp milk


  • Heat oven to 375F. Grease and flour 15×10-inch jelly roll pan. For the bars, in a large bowl, beat together sugar, sour cream, butter, and eggs until creamy. Blend in bananas and vanilla extract. Add flour, baking soda, salt, and blend for 1 minute. Stir in walnuts.
  • Spread batter evenly into pan. Bake 20 to 25 minutes or until golden brown.
  • Meanwhile, for frosting, heat butter in a large saucepan over medium heat until boiling. Let the butter turn a delicate brown and remove from heat immediately.
  • Add powdered sugar, vanilla extract, and milk. Whisk together until smooth (it should be thicker than a glaze but thinner than frosting). Using a spatula, spread the brown butter frosting over the warm bars (the frosting will be easier to spread while the bars are still warm).


Need a new cake pan? Check out these great pans!

Keyword banana bread, browned butter, cake, frosting

Leave a Reply

Your email address will not be published. Required fields are marked *

Recipe Rating

Love Bunker Baking?

share with the world